Looper mechanism for sewing-machines.



LUUPER MECHANISM FOB SEWING MACHINES.

(Application led Nov. 18, 1896. Renewed Jan. 17, 1900,)

(No Model.)

Patented Aug. 2|, |900.

2 Sheets-Shet l.

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Arm/mgm Patented Aug. 2l7 |900. H. C. PETERS. LOOPEB MECHANISM FOR SEWING MACHINES.

(Application led Nov. 1K8, 1896. Renewed Jan. 17, 1900.)

2 Sheets-Sheet 2.

(No Model.)

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UNrrE-D ASTATES PATENT Ormes..

HEBER O.'PETERS, OF BOSTON, MASSACHUSETTS."

LOOPER MECHANISM FOR SEWING-MACHINES.

SPEGFICA-TION forming part of Letters Patent No. 656,585, dated August 21, 1'900.

Application filed November 18, 1896. Renewed January 1'7, 1900. Serial No, 1,758. (No model.)

To all whom it may concern.:

Be it known that I, HEBER C. PETERS, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification.

Referring to the accompanying drawings, Figure l is a side elevation, partly in vertical central section,of one form of sewing-machine embodying my invention. Fig. 2 is a front elevation of my new thread-actuating mechanism. Fig. 3' 4is a side elevation of said thread-actuating mechanism, the supporting portion of the frame being partly in section.

The object of my invention is to produce a high-speed waxed-thread sewing-machine which is suitable for use in stiching in one line and which is economical and simple in construction and highly advantageous in use because of its increased speed and simplicity.

The most important feature of my invention consists in a new and useful combination of parts whereby the endwise and lateral movements of a bar mechanically connected to a driving-shaft are utilized to move a thread guide around the vertical path of a needle.

In the drawings which illustrate the princple of my invention andthe best mode now known to me of applying that principle, A is the frame, and A the main or driving shaft.

B is the awl-bar, which is actuated by the following mechanism: Orank .b on shaft'A has aI link b', connected with a sleeve or collar b2 on the awl-bar B, this collar being preferably adj ustble as heretofore. AWl-bar B is provided with the usual carrying-head b3, and the collar b2 on the aWl-bar is provided with a projection 222:, which projects into slot bw* and keeps the awl-bar from turning, the collar b2 being made fast on awl-bar B by the usual set-screw btw? The thread controller mechanism in its present form consists of a guide G, having one or more eyes g, through which the thread passes, and a tang g, loosely-jointed at g2 to a rocking shaft g3, which is mounted in frame A. The hinge or joint at g2 is at right angles to the lengthwise axis of rocking shaft or thread-guide support g3, so that guide G moves inthe direction of the lengthwise axis of the rocking support g3, and rocking of said support g3 movesl the guide transversely to the lengthwise axis of said shaft. Threadguide support g3 is attached to a laterallyswinging and endwise-moving bar g4, which passes freely through an opening in the buttend piece g5 of support g3 and is actuated from a' rotary shaft, preferably from the main shaft A. 'lhe bar g? isl connected with main shaft A', preferably byk eccentric-sleeve g6 and the eccentric Q7, fast on shaft A. to-and-fro movements of the guide G-that is, its movements inthe plane of the lengthwise axis of the rocking support gS-are obtained by a link g8 from the guide-tang g to the bar g4, the link gs being loosely jointed to the' guide-tang at g9 and connected to the bar g4 at g1. The sidewise movement of bar g4 gives a sidewise or lateral motion through the rocking support g3 to the guide G, and the endwise movement of bar g (due to the rotation of the eccentric g7 or other contrivance) gives Jthe to-and-fro motions to the guide G through the link g8. As it is frequently desirable to vary the to-and-fro movements or throw of thread-guide G, it is desirable that the connections at g10 of link gs with bar g4 should be made adjustable, and I consequently prefer to form bar g4 with a slot g, in which the pintle of the preferred joint connection'g10 is adjustable, this pintle being preferably a screw through link g8 and slot gn. The dotted lines in Fig. 2 indicate limits of lateral throw of guide-tang g', and the dotted line y in Fig. 3 shows one limit of the back throw of the guide-tang g. The butt-end piece g5 is in effect a part of support g3, for the back end of shaft g3 is socketed in the butt-end piece g5 and the two parts fixed rigidly together by set-screw gli', for example. The making of the support g3 thus practically in two pieces instead of prolonging the shaft gs rearwardly and passing bar g4 through a hole throughout the rearward eX- tension of the shaft g8 is merely for mechanical convenience. It is preferable, but not necessary, .to make guide G and its tang g in two pieces and to make the guide portion adjustable at Q14 in its tang g.-

The advantages of my new thread-actuating mechanism are that all universal joints The v IOO lthe machine. Figs. 2 and 3 Will illustrate this mode of 0p-r rying it around the needle,the return or `11p-1 ward movement of har g4 and the reverse lateral movement of the guide-carrier coinpleting the movement. of the carrier G around the needle and compelling carrier G to travel through its circular or elliptical path in the i Awise and laterally lmovable bar operatively direction in which it starts.

I prefer to couple the link gB and barg1 so that the main shaft may be run clockwisethat is, with the top of the shaft going to the rlightand downwardly as one sits in front of Reference to the arrows in eration. The advantage of rnnning'the main shaft clockwise in machines having this type lof thread-actuating mechanism is that it is much more convenient for the ordinary operator to start the balance-wheel by a downward pull toward himself than it is to start the wheel Vby pushing it away.

ing mechanism with a driving-shaft; an end.

Wise and laterally movable bar operatively connected with said driving-shaft; a rocking thread-guide support; a thread-guide loosely jointed to said rocking support; and a link from said thread-guide to said bar.

2. In a sewing-machine, the combination of a hooked or barbed needle and its operating mechanism with a driving-shaft; an endconnected with said driving-shaft; a roc-king thread-guide support; a thread-guide loosely jointed to said rocking support; anda link loosely jointed to said thread-guide andadjustably connected to said bar.

In testimony .whereof I have signed my name to this specification, in the Ypresence of two subscribing Witnesses, on this 17th day of October, A. D. 1396. y

HEBER C. PETERS.

Witnesses:

EDWARD S. BEACH, E. A. ALLEN. 

